Orbeta, J. (2000). Why slowing population growth in the Philippines is an imperative. Philippine Star.
芝加哥风格引文Orbeta, Joseph. "Why Slowing Population Growth in the Philippines Is an Imperative." Philippine Star 2000.
MLA引文Orbeta, Joseph. "Why Slowing Population Growth in the Philippines Is an Imperative." Philippine Star, 2000.
警告：这些引文格式不一定是100％准确.